I had my gall bladder removed some years ago. I don't think my doctor made any money selling it for transplant though, seeing as it's a fairly redundant bit of human anatomy.

For a few months afterwards, because of the smaller amount of bile that could be stored in my digestive system, I would feel a little queasy after eating an overly fatty meal. I don't get that any more though. Either my digestion has adapted, or I unconsciously tend to avoid overly fatty meals these days. Either way, it's good!